The boy was so tired that he fell asleep _____________ his mother could take off his clothes．
| A．before | B．after | C．while | D．where |
Another food crop raised by Indians ______ was strange to the European was called Indian corn.
| A．when | B．whose | C．which | D．where |
______ with a gradual rise of seawater, some nations in the Pacific are considering moving in the near future．
| A．Facing | B．To face |
| C．Being faced | D．Faced |
No driving after drinking is a rule that every driver ______ obey in our country.
| A．will | B．shall | C．may | D．can |
Restaurants in every corner of Tianjin not only provide job opportunities but ______ lots of taxes.
| A．result in | B．result from |
| C．bring up | D．bring in |
--- When did you last see your first teacher?
--- On ______ Friday last June, at ______ celebration of her 40th year of teaching.
| A．a; the | B．a; a | C．/; a | D．/; the |